A space heater can help save energy if it's used in the right situation. There are many electric space heaters that we've covered in our Ripoff Report that make unrealistic promises and are way overpriced. In short, an electric space heater will convert almost all of the electricity it consumes to heat.
The Lasko ceramic space heater has a maximum wattage of 1,500 W with 3 settings. A high (1,500 W), a low (900W) and a fan only mode.
There is an adjustable thermostat to control how much heat enters your space. It is not a temperature control, but a dial that you select the heat intensity.